Baseline Experiment for Active Control of Structural Vibrations.

摘要

A baseline experiment is developed which can be used to evaluate control systems for large space structures. The experiment consists of an inverted cantilever beam. Proof mass actuators and a structural dynamics shaker provide the control forces, and integrated output of beam-mounted accelerometers provides velocity feedback. A programmable controller allows different control algorithms to be evaluated. System damping and frequency response are determined with and without the controller engaged, and experimental results are compared to analytical predictions. Modal suppression techniques are attempted in order to demonstrate active control of selected modes while maintaining overall system stability. Vibration control; Flexible spacecraft; Mechanical vibrators. Theses. (edc)